
/*
 * Copyright 2019 the original author or authors.
 *
 * Licensed under the LGPL, Version 3.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at  http://www.gnu.org/licenses/lgpl-3.0.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.jn.sqlhelper.dialect.internal.limit;

import com.jn.sqlhelper.dialect.pagination.RowSelection;
import com.jn.sqlhelper.dialect.internal.AbstractDialect;


public class DefaultLimitHandler extends AbstractLimitHandler {
    public DefaultLimitHandler(AbstractDialect dialect) {
        setDialect(dialect);
    }


    public DefaultLimitHandler() {
    }

    @Override
    public String processSql(String sql,boolean isSubquery, boolean useLimitVariable, RowSelection selection) {
        boolean useLimitOffset = (getDialect().isSupportsLimit()) && (getDialect().isSupportsLimitOffset()) && (LimitHelper.hasFirstRow(selection)) && (LimitHelper.hasMaxRows(selection));
        return getLimitString(sql, isSubquery,useLimitVariable, useLimitOffset ? LimitHelper.getFirstRow(selection) : 0, getMaxOrLimit(selection));
    }
}
